Inventors:
James B. Grimes - Bakersfield CA
International Classification:
A61F 234
Abstract:
An implantable acetabular hip prosthesis includes a primary shell having an outer surface adapted to be received within a surgically prepared acetabulum, and an inner cavity for receiving a bearing insert which, in turn, receives a femoral head portion of a femoral component of a total hip prosthesis. The acetabular component of the prosthesis further includes an augmentation piece which is attachable to the primary shell and which fills a defect, such as a rim or cavitary defect, adjacent the natural acetabulum. The augmentation piece may be fixedly retained in a selected one of a plurality of angular orientations, relative to the primary shell. A plurality of augmentation pieces of varying sizes and shapes may be provided to allow the orthopedic surgeon to select an appropriate augmentation piece to match the defect.